And all that fits in with the second mystery of Collishaw--who probably knew, if not everything, then something, of the exact circumstances of Brake's death, and let his knowledge get to the ears of--Brake's assailant!--who cleverly got rid of him.

That's my notion," concluded the detective.

"And--I shall be surprised if it isn't a correct one!" "And, as I've said, doctor," chimed in Mitchington, "can't you give us a bit of information, now?
You see the line we're on?
Now, as it's evident you once knew Braden, or Brake--" "I have never said so!" interrupted Ransford sharply.
"Well--we infer it, from the undoubted fact that he called here," remarked Mitchington.

"And if--" "Wait!" said Ransford.

He had been listening with absorbed attention to Jettison's theory, and he now rose from his chair and began to pace the room, hands in pockets, as if in deep thought.